Engine starting device.



L. WOLFFSOHN.

ENGINE STARTING DEVICE.

APPLICATION FILED JULY 9, 1914.

1,278,064. Patented Sept. 3,1918.

/& 4 .13 N'NV Q 5 18 WITNESSES UNITED STATES PATENT OFFICE.

LIONEL WOLFFSOHN, OF HOBOKEN, NEW JERSEY, ASSIGNOR, BY MESNE ASSIGNMENTS, TO IBIJUR MOTOR APPLIANCE COMPANY, A CORPORATION OF DELAWARE.

ENGINE STARTING DEVICE.

Application filed July 9, 1914 Serial No. 849,898.

whereby a smaller pinion may be mounted upon a given shaft than is-feasible in prior apparatus.

One of the objects of the invention is to provide an engine-starting apparatus comprising a comparatively high speed-reduction effected through a single pair of gears. Another object is to provide a simple and compact" arrangement of driving shaft,

- roller-clutch and pinion. Another object is to provide an apparatus of the above type in which a pinion of minimum diameter comparedwlthi the diameter of the drivingshaft, may be utilized without sacrificin mechanical strength or durability.

Other oli'ec'ts will be in part obvious and inpart pointed out hereinafter.

The invention accordingly consists in the I features of construction, combinations ofelements and arrangement of parts which will be exemplified in the construction hereinafter set forth, and the scope of the application of which will be indicated in the follow ing claims.

In the accompanying drawings, which .isillustrated a preferred embodiment of the severalfeatures of the invention, Y

V Ei l fe 1 is a longitudinal View, partly in,' section, of an eng ne-starting motor, an en gme dr ven element, and interconnecting mechanism; j

Fig. 2 is a transverse section on the line 2+2,ofFig.1

sj. l V Fig. 3 is an 'en dv'iew of FigJl and Fig. 4; illustrates a p; ion and of a typefound in the prior-are 'Similarlreference characters refer to similar parts throughout the several. views of the:

I d i E V T l '-"the .inner member 4 of t u Such Byway of explanation it'may be stated,

draw ng, ,7

' that in enginefstarting apparatus it has been Specification of- Letters Patent.

mounting Patented Sept. 3, 1918.

tively high speed-reduction between the driving motor and the engine shaft. In apparatus of this type where the'fl'y-wheel is engaged to the starting mechanism, the satisfactory speed-reduction ,in the starting device mustbe. effected by having the motordriven pinion small enough, or to effect a part of the reduction between fly-wheel and pi'nion and the remainder through addi- '-tional mechanism. The present invention relates more especially, to increasing the speed reduction by decreasing the size of the motor-driven pinion.

Referring now more particularly to Figs.

-1, 2 and 3, there is illustrated at 1' a motor and described,-'b'ut' any clutch connecting means capable oftraiismitting power from the motor to the pinion but incapable of transmitting power in the inverse direction, regardless what the position of the pinion,

would come Within the scopeof my invention. With the parts in the position illustrated in Fig. 1 a counter-clockwise rotation (Fig- 2) of the motor shaft. 2 andinnerfvv member 4 of the roller clutch causes a simi 1 I la! rotation of the outer member 5 of the, 1

clutch, and with it its annular ortion7 and inwardly projecting plate 8 an through'the 'iannular teeth 9 the pinion 10. is caused to -rotate likewise in a counter-clockwise direcs tion, to start the engine by turning the fly- Wheel clockwise. If while the pinion is thus I in engagement with the fiy-wheel gear .11

the engine starts to rotaten'nder' lts'own power, the engine speed may exceed the free r'running speed of the motor, in which case the pinion 10,'pla'te 8 and outer member 5 of the'roller clutch would be driven from the engine, at a speed higher-than the speed of time the rollers 12 will simply enter the ooves iio reiensing' the swim oinion i0 afznni the pinion 10:

1e pinion is prefernoiy 1 travel. so that the E 1 1 Wiih the annular teeth 9 zii'rlless of the posiiion of 'nion eiong the motor shaft. if /i niis movement of the pinion into end. on; or engagement with the iiy-u'heel may be eliecieti in suitnbie time relation $0 the one j and sropping' of the motor iiselii, as iiius- \cecl in my congenciing appiicaiion Serini 7751370 filed June 25, 1913 This may he oroughishout by the arrsngemeni dingzrmnnmticeliy indicated in Fig. i of the drawings in i'liifi arrangement lever i; is prrwicied with :1 contact plate 20 suitei'iiy insnhiieii at 21. This contest plate with (he lei'er in. the position shown short circuits the s ni'ionnry contacts 22, thus completing ;,3 between the motor 1 one he ir-reni 2 h which the motor is c precise time in which this cirnpieteri depends of course on the iosiion of rho lever 14- Whcn conmci 520 is hiong 'h 1 l diilSii cont-nets :inel this 3* be of any (iJSil'Efl stage of the operation.

Ti'iih ihe arrangement of parts herein clescrihecl rho radius of the pinion is equal to 1 ie reruns of the motor shaft the sum of the Web 18 the pinion and the height be e into th web of the pinion the en ire thickness. 1e \T-Sb contributes towers! the the pinion. and the thickness strength nee/(ii of course be consirierebl less then in constructions (see Fig. i) Where i is necessary to weaken the pinion 17 by using part of ihe Web 18 for one or more key-Ways lie; so that with apparatus embodying the present invention maximum speed reduction is secured between engine flywheel and motor shaft with given diameters for these two eiemerits. By subcliridimg the driving power transmitted at the roller-clutch into four poriions and at the pinion iniio as many portions is there are teeth, the bending and other strains incident' "to the irsnsmiss on of power in this manner are for more effectively and sazfeiy cared for than Wouici be case if the. entire power had to be transmitted through one or two comparatively shallow key-Ways; this advantage results in each instance not only from the subdivision of the coasting" driving and driven elements, but from the comparatively large effective radius at which these elements contact the torque transmitted. being of course inverseiy proportionaie to the efiective radius of a given amount of power. it Will thus be seen that 'n'irlely ciiiierenc embodiments of Li .1 iion could he moxie n'i ihoni; de mrringr he the scone thereof inienileei the? n eer contained in the above ciescrignion shown in {he accompanying drawings sh be interpreted as illustrative zinri not in :i limiting sense.

it is also to be unrierscood Him: ihe lnnguage used in ihe iiollowing claim: in tended to cover of ihe generic and ciiic features o iDYGDiiOD herein do scribed, and all I nenrs of the scope s? z the invention which a a matter of lnngnnge might be said 'hercoeiween.

Having .descrii: claim as new and r iers Patent is:

1. Apparatus of she character riescribeeh comprising in coinhinetiom a moior gins-driven memhen a moior o i her monnteci for i'otsi ion and W. rocni io 'n'iih respect to its snpporii ore mining clutch comnrisin member secures to the motor shaft :i member rei'oh said shaft, s oWer-trsnsmitcing neciion hetween sn est-named member enci IQ. motor-driven n'oei:

2. ii pnmius character compr in coinhinefion inoiori engine-(hiven member s, motorliivcii mempower ernnsmitieci fiom seici moior said motor-driven meinher and means moving said moior if (Qfi member into i gagemeni with said gear simultaneously the application of power to soic; motoi:

3. Apparatus oi": the character (iescrihech comprising in combination, n motor engine-driven member, a motor-driven member an oi'er-innning ciutch chrough which power is transmitted from seioi motor motor-driven memhen means for moving said motor-(iriven member into engngeme with said gear simniseneousiy with the plication of power to said motor, means for energizing said motor fully suhseo neni', to ei'igsgemenc= 4. Apparatus of the character described. comprising, in combination, amoron engine-(iriven gear s motor-driven member, over-running cluicch through which power is irensmitieri from said motor to seici motor- (iriven member and means for moving motor-ciriven member into engagement? with soici gear simuiteneousiy with the applies-1, sion of power to motor, sziiol ciuich overrunning when saici engine-ciriven has started and prior to disengagement of said gear and pinion.

5. Apparatus of theclass described comprising, in combination, an engine-driven gear, a motor-driven shaft, a pinion mounted upon said shaft to move into mesh with said gear, and means adapted to transmit power from said shaft to said pinion at a point more remote from the axis of said shaft than the base of the pinion teeth.

6. Apparatus of the character described, comprising, in combination, a motor, a motor shaft, an engine-driven gear, a. pinion mounted on the motor shaft adapted to mesh with said gear, and a power-transmitting connection between the motor shaft and the teeth of said pinion independent of the body of said pinion.

7. Apparatus of the character described, comprising, in combination, a motor, a motor shaft, an engine-driven gear, a pinion rotatably mounted sleeved directly on the motor shaft adapted to mesh with, said gear, a power-transmitting connection between the motor shaft and the teeth of said pinion, andmeans adapted to cause said pinion to travel into and out of mesh with said ear.

8. Apparatus of the character described, comprising, in combination, a motor, a motor shaft, an engine-driven member, a motordriven member mounted on the motor shaft adapted to make power-transmitting connection with said engine-driven member, an

over-running clutch comprising a member secured tothe motor shaft and a member revoluble upon said shaft, and a powertransmitting connection between said lastnamed member and said motor-driven member at a point laterally offset from said engine-driven member at all positions of said motor-driven member.

9. Apparatus of the character described, comprising, in combination, a motor,-an eninc-driven member, a motor-driven mem- Eer adapted to coact with said engine-driven member and sleeved on the motor shaft, and power-transmitting means comprising an overrunning'clutch and having a portion extending radially beyond said motor-driven member through which power is transmitted to the latter.

10. Apparatus of the character described,

comprising, in combination, a fly-wheel, a

gear on said fiy-wheel, a motor-driven pinion, and an over-running clutch comprising a member secured to the motor shaft and a member revolubly mounted on said shaft and provided with an inwardly extendin portion adapted to engage the teeth of sai pinion.

11. Apparatus of the character described, comprising, in combination, a fly-wheel, a gear on said fly-wheel, a motor-driven pinion sleeved' on the motor shaft, and an overrunning clutch comprising a member secured to the motor shaft and a member revolubly mounted on said shaft and provided with an inwardly extending portion adapted to engage the teeth of said pinion.

12. Apparatus of the character described, comprising, in combination, a motor, an engine-driven gear, a motor-driven pinion, an over-running clutch comprising a; member secured to the motor shaft and a member revolubly mounted on said shaft and provided with an inwardly extending portion adapted to engage the teeth of said pinion continuously, and means for moving said pinion axially to effect a driving engagement between said pinion and said gear.

13. Apparatus of the character described, comprising, in combination, a motor, a motor shaft, an engine-driven member, a pinion sleeved directly on the motor shaft, an over-running clutch comprising a member secured to the motor shaft and a mem ber revoluble upon said shaft, and a powertransmitting connection between said lastnamed member and the teeth of said pinion.

14. Apparatus of the character described, comprising in combination, a motor, an engine-driven gear, a shaft driven from said motor, a pinion on said shaft normally out of mesh with said gear and adapted to be moved into mesh therewith, and means driien from said motor and adapted to embrace and drive said pinion.

15. Apparatus of the character described, comprising in combination, a motor, an engine-driven gear, a shaft driven from said motor, a pinion on said shaft normally out of mesh with said gear and adapted to be moved into.mesh therewith, and a device driven from said motor fitting about said pinion and interlocking with teeth thereon.

16. Apparatus of the character described, comprising in combination, a motor, an engine-driven gear, a shaft driven from said motor, a pinion on said shaft normally out of mesh with said ear and adapted to be moved into mesh t erewith, and a device driven from said motor fitting about said pinion and interlocking with teeth thereon, said pinion being slidable within the member fitted about the same. I

17 Apparatus of the character described, comprising in combination, an engine-driven gear, a motor, a pinion, a member adapted to transmit power from said motor to the teeth of said pinion, at one part of the length of said teeth, another part of said teeth be: ing adapted to engage said gear, and means adapted to move said pinion into and out of mesh with said gear.

18. Apparatus of the character described, comprising in combination, an engine-driven gear, a motor, a pinion, means adapted to transmit power from said motor to the teeth of said pinion,means adapted to move said pinion into and out of mesh with said gear, said means including a clutch through which power is transmitted to said pinion.

19. Apparatus of the character described, comprising in combination, an engine-driven gear, a pinion, means adapted to move said pinion into and out of mesh with said gear, and a driving member for said pinion titted about and interlocking with the teeth thereof and with respect to which said pinion is slidahle in an axial direction.

20. i-kpparatus of the character described. comprising in combination, an engine-driven gear, a pinion, means adapted to move said pinion into and out of mesh with said gear, a driving member for said pinion fitted about and interlocking with the teeth thereoi and with respect to which said pinion is slidable in an axial direction, a motor, and means adapted to transmit power from said motor to said pinion through a clutch.

ara-nae 21. Apparatus of the character described, eonugrising in combination, a pinion, a member fitted about said pinion and interlocking with the teeth thereof and with respect to which said pinion is slidable, and means adapted to drive said pinion through said member.

22. In apparatus of the class described, in combination, an engine, a driven gear connected with said engine, a driving gear adapted to cooperate therewith, and means driven by a starting motor, and cooperating with said driving gear at a point spaced from its mount.

In testimony whereof I afiix my signature, in the presence of two witnesses.

LIUNEL WOLFFSOHN.

Witnesses Harmer S. HAGEN, Synvarre B. PRONECK. 

